forked from OSchip/llvm-project
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
// RUN: %check_clang_tidy %s llvmlibc-callee-namespace %t
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namespace __llvm_libc {
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namespace nested {
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void nested_func() {}
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} // namespace nested
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void libc_api_func() {}
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} // namespace __llvm_libc
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// Emulate a function from the public headers like string.h
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void libc_api_func() {}
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// Emulate a function specifically allowed by the exception list.
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void malloc() {}
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namespace __llvm_libc {
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void Test() {
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// Allow calls with the fully qualified name.
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__llvm_libc::libc_api_func();
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__llvm_libc::nested::nested_func();
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void (*qualifiedPtr)(void) = __llvm_libc::libc_api_func;
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qualifiedPtr();
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// Should not trigger on compiler provided function calls.
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(void)__builtin_abs(-1);
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// Bare calls are allowed as long as they resolve to the correct namespace.
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libc_api_func();
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nested::nested_func();
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void (*barePtr)(void) = __llvm_libc::libc_api_func;
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barePtr();
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// Disallow calling into global namespace for implemented entrypoints.
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::libc_api_func();
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// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: 'libc_api_func' must resolve to a function declared within the '__llvm_libc' namespace
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// CHECK-MESSAGES: :11:6: note: resolves to this declaration
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// Disallow indirect references to functions in global namespace.
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void (*badPtr)(void) = ::libc_api_func;
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badPtr();
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// CHECK-MESSAGES: :[[@LINE-2]]:26: warning: 'libc_api_func' must resolve to a function declared within the '__llvm_libc' namespace
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// CHECK-MESSAGES: :11:6: note: resolves to this declaration
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// Allow calling into global namespace for specific functions.
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::malloc();
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}
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} // namespace __llvm_libc
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